Portable power device



FIG. 1 is a perspective view of the new portable power device design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a side view thereof; and,

FIG. 7 is an opposite side view thereof.

The dash-dash broken lines in the drawings illustrate portions of the article that form no part of the claimed design. The dash-dot-dot-dash lines in the drawings illustrate a boundary, with the portions within the boundary forming no part of the claimed design. 

CLAIM I claim the ornamental design for a portable power device, as shown and described. 